Metallurgy Flashcards
explain hall’s process
how are metals like zinc,cadmium,mercury purified?
Distillation
which impurities does impure zinc contain?
cadmium and platinum
at what temperatures zinc and cadmium are heated and vapourised in distillation purification?
920°C and 767°C
which ore is galena and cinnabar
PbS,HgS
zinc blende and copper glance
ZnS,Cu2S
fool’s gold and argentite
Fe2S and Ag2S
copper pyrite and fluorspar
CuFeS2 and CaF2
Horn Silver formula
AgCl
Haematite and Magnetite
Fe2O3 and Fe3O4
Kaolinite formula it is a form of clay
Al2(OH)4.Si2O5
what the fuck is ruby copper?
Cuprite or Cu2O
Pitch blende bruh damn
U3O8 😳
why cant we do carbon reduction of chromium
because chromium forms carbide which is not desirable
explain cyanide process for gold
this is it pretty much. after this further purification maybe
How is zinc obtained from Zinc blende
How is Zn derived from calamine
Same as blende but concentration is done by levigation and oxide is obtained by clacination instead of roasting
Malachite
Cu(OH)2.CuCO3
Azurite
Cu(OH)2.2CuCO3
How is copper extracted from copper pyrites
What happens in bessemer converter
Why is SiO2 used as flux and not some other acidic flux to get rid of acidic impurity FeO
Because it is cheap my nigga
Tin extraction
Lead extraction from galena
C
D and B
B
Dow’s process explanation
Electrolysis of mgcl2
A
B
